. >>> maryland police believe they have identified a possible serial killer responsible for a string of bizarre mother-daughter murders. cbs whit johnson reports. >> reporter: jason thomas scott they say is a serial killer with the blood of at least five women on his hands. tuesday the former ups worker was indicted in the murders of two of those women. >> we'll be seeking life without parole. >> scott allegedly murdered 42-year-old dolores de witt and her daughter ebony. in march 2009 their bodies was found in a stolen car after it was set on fire. scott is also the prime suspect in three others prince george's county, maryland mothers, including carolyn and her daughter melissa found shot to death in their home. in 2008, they will make butler was alone when she was gunned down before her home was set on fire. criminal profiler pat brown said if connected the pattern of the killing would fit the definition of a serial killer. >> this man was a ups driver. he did know the routes, the neighborhood and was able to case where he was going to attack. in my opinion these weren't accidenta